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通过纯水条件下的模拟研究,考察NH4+和H2O2在单独和联用时对臭氧氧化过程中溴酸盐形成的抑制效能。结果表明,单独投加NH4+能显著降低溴酸盐的生成量,并对水中臭氧浓度衰减无明显影响;投加H2O2大于0.20 mmol/L时,能在一定程度上抑制溴酸盐的形成,但加快了水中臭氧浓度的衰减;同时投加过量H2O2和NH4+时,相对单独投加过量H2O2条件进一步抑制了溴酸盐的形成,但相对单独投加NH4+条件却促进了溴酸盐的形成。
Through the simulation study under pure water conditions, the inhibitory efficacy of NH4 + and H2O2 on the formation of bromate in ozone oxidation process was investigated when used alone and in combination. The results showed that the addition of NH4 + alone could significantly reduce the amount of bromate produced and had no significant effect on the attenuation of ozone concentration in water. However, the addition of H2O2 greater than 0.20 mmol / L inhibited the bromate formation to a certain degree, Which accelerated the decay of ozone concentration in water. When excessive H2O2 and NH4 + were dosed at the same time, the formation of bromate was further inhibited by the addition of excess H2O2 alone. However, the formation of bromate was promoted by the addition of NH4 + alone.